723 lines
28 KiB
C++
723 lines
28 KiB
C++
//===-- CommandFlags.cpp - Command Line Flags Interface ---------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file contains codegen-specific flags that are shared between different
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// command line tools. The tools "llc" and "opt" both use this file to prevent
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// flag duplication.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/CodeGen/CommandFlags.h"
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#include "llvm/IR/Module.h"
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#include "llvm/MC/SubtargetFeature.h"
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#include "llvm/Support/CommandLine.h"
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#include "llvm/Support/Host.h"
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using namespace llvm;
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#define CGOPT(TY, NAME) \
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static cl::opt<TY> *NAME##View; \
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TY codegen::get##NAME() { \
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assert(NAME##View && "RegisterCodeGenFlags not created."); \
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return *NAME##View; \
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}
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#define CGLIST(TY, NAME) \
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static cl::list<TY> *NAME##View; \
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std::vector<TY> codegen::get##NAME() { \
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assert(NAME##View && "RegisterCodeGenFlags not created."); \
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return *NAME##View; \
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}
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#define CGOPT_EXP(TY, NAME) \
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CGOPT(TY, NAME) \
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Optional<TY> codegen::getExplicit##NAME() { \
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if (NAME##View->getNumOccurrences()) { \
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TY res = *NAME##View; \
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return res; \
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} \
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return None; \
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}
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CGOPT(std::string, MArch)
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CGOPT(std::string, MCPU)
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CGLIST(std::string, MAttrs)
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CGOPT_EXP(Reloc::Model, RelocModel)
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CGOPT(ThreadModel::Model, ThreadModel)
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CGOPT_EXP(CodeModel::Model, CodeModel)
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CGOPT(ExceptionHandling, ExceptionModel)
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CGOPT_EXP(CodeGenFileType, FileType)
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CGOPT(FramePointer::FP, FramePointerUsage)
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CGOPT(bool, EnableUnsafeFPMath)
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CGOPT(bool, EnableNoInfsFPMath)
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CGOPT(bool, EnableNoNaNsFPMath)
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CGOPT(bool, EnableNoSignedZerosFPMath)
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CGOPT(bool, EnableNoTrappingFPMath)
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CGOPT(bool, EnableAIXExtendedAltivecABI)
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CGOPT(DenormalMode::DenormalModeKind, DenormalFPMath)
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CGOPT(DenormalMode::DenormalModeKind, DenormalFP32Math)
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CGOPT(bool, EnableHonorSignDependentRoundingFPMath)
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CGOPT(FloatABI::ABIType, FloatABIForCalls)
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CGOPT(FPOpFusion::FPOpFusionMode, FuseFPOps)
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CGOPT(bool, DontPlaceZerosInBSS)
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CGOPT(bool, EnableGuaranteedTailCallOpt)
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CGOPT(bool, DisableTailCalls)
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CGOPT(bool, StackSymbolOrdering)
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CGOPT(unsigned, OverrideStackAlignment)
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CGOPT(bool, StackRealign)
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CGOPT(std::string, TrapFuncName)
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CGOPT(bool, UseCtors)
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CGOPT(bool, RelaxELFRelocations)
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CGOPT_EXP(bool, DataSections)
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CGOPT_EXP(bool, FunctionSections)
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CGOPT(bool, IgnoreXCOFFVisibility)
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CGOPT(bool, XCOFFTracebackTable)
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CGOPT(std::string, BBSections)
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CGOPT(std::string, StackProtectorGuard)
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CGOPT(unsigned, StackProtectorGuardOffset)
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CGOPT(std::string, StackProtectorGuardReg)
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CGOPT(unsigned, TLSSize)
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CGOPT(bool, EmulatedTLS)
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CGOPT(bool, UniqueSectionNames)
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CGOPT(bool, UniqueBasicBlockSectionNames)
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CGOPT(EABI, EABIVersion)
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CGOPT(DebuggerKind, DebuggerTuningOpt)
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CGOPT(bool, EnableStackSizeSection)
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CGOPT(bool, EnableAddrsig)
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CGOPT(bool, EmitCallSiteInfo)
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CGOPT(bool, EnableMachineFunctionSplitter)
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CGOPT(bool, EnableDebugEntryValues)
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CGOPT(bool, PseudoProbeForProfiling)
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CGOPT(bool, ValueTrackingVariableLocations)
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CGOPT(bool, ForceDwarfFrameSection)
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CGOPT(bool, XRayOmitFunctionIndex)
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codegen::RegisterCodeGenFlags::RegisterCodeGenFlags() {
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#define CGBINDOPT(NAME) \
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do { \
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NAME##View = std::addressof(NAME); \
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} while (0)
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static cl::opt<std::string> MArch(
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"march", cl::desc("Architecture to generate code for (see --version)"));
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CGBINDOPT(MArch);
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static cl::opt<std::string> MCPU(
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"mcpu", cl::desc("Target a specific cpu type (-mcpu=help for details)"),
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cl::value_desc("cpu-name"), cl::init(""));
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CGBINDOPT(MCPU);
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static cl::list<std::string> MAttrs(
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"mattr", cl::CommaSeparated,
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cl::desc("Target specific attributes (-mattr=help for details)"),
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cl::value_desc("a1,+a2,-a3,..."));
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CGBINDOPT(MAttrs);
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static cl::opt<Reloc::Model> RelocModel(
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"relocation-model", cl::desc("Choose relocation model"),
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cl::values(
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clEnumValN(Reloc::Static, "static", "Non-relocatable code"),
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clEnumValN(Reloc::PIC_, "pic",
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"Fully relocatable, position independent code"),
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clEnumValN(Reloc::DynamicNoPIC, "dynamic-no-pic",
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"Relocatable external references, non-relocatable code"),
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clEnumValN(
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Reloc::ROPI, "ropi",
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"Code and read-only data relocatable, accessed PC-relative"),
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clEnumValN(
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Reloc::RWPI, "rwpi",
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"Read-write data relocatable, accessed relative to static base"),
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clEnumValN(Reloc::ROPI_RWPI, "ropi-rwpi",
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"Combination of ropi and rwpi")));
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CGBINDOPT(RelocModel);
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static cl::opt<ThreadModel::Model> ThreadModel(
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"thread-model", cl::desc("Choose threading model"),
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cl::init(ThreadModel::POSIX),
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cl::values(
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clEnumValN(ThreadModel::POSIX, "posix", "POSIX thread model"),
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clEnumValN(ThreadModel::Single, "single", "Single thread model")));
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CGBINDOPT(ThreadModel);
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static cl::opt<CodeModel::Model> CodeModel(
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"code-model", cl::desc("Choose code model"),
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cl::values(clEnumValN(CodeModel::Tiny, "tiny", "Tiny code model"),
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clEnumValN(CodeModel::Small, "small", "Small code model"),
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clEnumValN(CodeModel::Kernel, "kernel", "Kernel code model"),
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clEnumValN(CodeModel::Medium, "medium", "Medium code model"),
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clEnumValN(CodeModel::Large, "large", "Large code model")));
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CGBINDOPT(CodeModel);
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static cl::opt<ExceptionHandling> ExceptionModel(
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"exception-model", cl::desc("exception model"),
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cl::init(ExceptionHandling::None),
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cl::values(
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clEnumValN(ExceptionHandling::None, "default",
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"default exception handling model"),
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clEnumValN(ExceptionHandling::DwarfCFI, "dwarf",
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"DWARF-like CFI based exception handling"),
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clEnumValN(ExceptionHandling::SjLj, "sjlj",
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"SjLj exception handling"),
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clEnumValN(ExceptionHandling::ARM, "arm", "ARM EHABI exceptions"),
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clEnumValN(ExceptionHandling::WinEH, "wineh",
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"Windows exception model"),
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clEnumValN(ExceptionHandling::Wasm, "wasm",
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"WebAssembly exception handling")));
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CGBINDOPT(ExceptionModel);
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static cl::opt<CodeGenFileType> FileType(
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"filetype", cl::init(CGFT_AssemblyFile),
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cl::desc(
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"Choose a file type (not all types are supported by all targets):"),
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cl::values(
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clEnumValN(CGFT_AssemblyFile, "asm", "Emit an assembly ('.s') file"),
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clEnumValN(CGFT_ObjectFile, "obj",
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"Emit a native object ('.o') file"),
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clEnumValN(CGFT_Null, "null",
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"Emit nothing, for performance testing")));
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CGBINDOPT(FileType);
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static cl::opt<FramePointer::FP> FramePointerUsage(
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"frame-pointer",
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cl::desc("Specify frame pointer elimination optimization"),
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cl::init(FramePointer::None),
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cl::values(
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clEnumValN(FramePointer::All, "all",
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"Disable frame pointer elimination"),
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clEnumValN(FramePointer::NonLeaf, "non-leaf",
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"Disable frame pointer elimination for non-leaf frame"),
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clEnumValN(FramePointer::None, "none",
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"Enable frame pointer elimination")));
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CGBINDOPT(FramePointerUsage);
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static cl::opt<bool> EnableUnsafeFPMath(
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"enable-unsafe-fp-math",
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cl::desc("Enable optimizations that may decrease FP precision"),
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cl::init(false));
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CGBINDOPT(EnableUnsafeFPMath);
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static cl::opt<bool> EnableNoInfsFPMath(
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"enable-no-infs-fp-math",
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cl::desc("Enable FP math optimizations that assume no +-Infs"),
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cl::init(false));
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CGBINDOPT(EnableNoInfsFPMath);
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static cl::opt<bool> EnableNoNaNsFPMath(
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"enable-no-nans-fp-math",
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cl::desc("Enable FP math optimizations that assume no NaNs"),
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cl::init(false));
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CGBINDOPT(EnableNoNaNsFPMath);
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static cl::opt<bool> EnableNoSignedZerosFPMath(
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"enable-no-signed-zeros-fp-math",
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cl::desc("Enable FP math optimizations that assume "
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"the sign of 0 is insignificant"),
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cl::init(false));
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CGBINDOPT(EnableNoSignedZerosFPMath);
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static cl::opt<bool> EnableNoTrappingFPMath(
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"enable-no-trapping-fp-math",
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cl::desc("Enable setting the FP exceptions build "
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"attribute not to use exceptions"),
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cl::init(false));
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CGBINDOPT(EnableNoTrappingFPMath);
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static const auto DenormFlagEnumOptions =
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cl::values(clEnumValN(DenormalMode::IEEE, "ieee",
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"IEEE 754 denormal numbers"),
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clEnumValN(DenormalMode::PreserveSign, "preserve-sign",
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"the sign of a flushed-to-zero number is preserved "
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"in the sign of 0"),
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clEnumValN(DenormalMode::PositiveZero, "positive-zero",
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"denormals are flushed to positive zero"));
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// FIXME: Doesn't have way to specify separate input and output modes.
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static cl::opt<DenormalMode::DenormalModeKind> DenormalFPMath(
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"denormal-fp-math",
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cl::desc("Select which denormal numbers the code is permitted to require"),
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cl::init(DenormalMode::IEEE),
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DenormFlagEnumOptions);
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CGBINDOPT(DenormalFPMath);
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static cl::opt<DenormalMode::DenormalModeKind> DenormalFP32Math(
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"denormal-fp-math-f32",
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cl::desc("Select which denormal numbers the code is permitted to require for float"),
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cl::init(DenormalMode::Invalid),
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DenormFlagEnumOptions);
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CGBINDOPT(DenormalFP32Math);
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static cl::opt<bool> EnableHonorSignDependentRoundingFPMath(
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"enable-sign-dependent-rounding-fp-math", cl::Hidden,
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cl::desc("Force codegen to assume rounding mode can change dynamically"),
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cl::init(false));
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CGBINDOPT(EnableHonorSignDependentRoundingFPMath);
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static cl::opt<FloatABI::ABIType> FloatABIForCalls(
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"float-abi", cl::desc("Choose float ABI type"),
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cl::init(FloatABI::Default),
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cl::values(clEnumValN(FloatABI::Default, "default",
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"Target default float ABI type"),
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clEnumValN(FloatABI::Soft, "soft",
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"Soft float ABI (implied by -soft-float)"),
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clEnumValN(FloatABI::Hard, "hard",
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"Hard float ABI (uses FP registers)")));
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CGBINDOPT(FloatABIForCalls);
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static cl::opt<FPOpFusion::FPOpFusionMode> FuseFPOps(
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"fp-contract", cl::desc("Enable aggressive formation of fused FP ops"),
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cl::init(FPOpFusion::Standard),
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cl::values(
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clEnumValN(FPOpFusion::Fast, "fast",
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"Fuse FP ops whenever profitable"),
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clEnumValN(FPOpFusion::Standard, "on", "Only fuse 'blessed' FP ops."),
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clEnumValN(FPOpFusion::Strict, "off",
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"Only fuse FP ops when the result won't be affected.")));
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CGBINDOPT(FuseFPOps);
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static cl::opt<bool> DontPlaceZerosInBSS(
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"nozero-initialized-in-bss",
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cl::desc("Don't place zero-initialized symbols into bss section"),
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cl::init(false));
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CGBINDOPT(DontPlaceZerosInBSS);
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static cl::opt<bool> EnableAIXExtendedAltivecABI(
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"vec-extabi", cl::desc("Enable the AIX Extended Altivec ABI."),
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cl::init(false));
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CGBINDOPT(EnableAIXExtendedAltivecABI);
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static cl::opt<bool> EnableGuaranteedTailCallOpt(
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"tailcallopt",
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cl::desc(
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"Turn fastcc calls into tail calls by (potentially) changing ABI."),
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cl::init(false));
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CGBINDOPT(EnableGuaranteedTailCallOpt);
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static cl::opt<bool> DisableTailCalls(
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"disable-tail-calls", cl::desc("Never emit tail calls"), cl::init(false));
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CGBINDOPT(DisableTailCalls);
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static cl::opt<bool> StackSymbolOrdering(
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"stack-symbol-ordering", cl::desc("Order local stack symbols."),
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cl::init(true));
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CGBINDOPT(StackSymbolOrdering);
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static cl::opt<unsigned> OverrideStackAlignment(
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"stack-alignment", cl::desc("Override default stack alignment"),
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cl::init(0));
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CGBINDOPT(OverrideStackAlignment);
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static cl::opt<bool> StackRealign(
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"stackrealign",
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cl::desc("Force align the stack to the minimum alignment"),
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cl::init(false));
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CGBINDOPT(StackRealign);
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static cl::opt<std::string> TrapFuncName(
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"trap-func", cl::Hidden,
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cl::desc("Emit a call to trap function rather than a trap instruction"),
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cl::init(""));
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CGBINDOPT(TrapFuncName);
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static cl::opt<bool> UseCtors("use-ctors",
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cl::desc("Use .ctors instead of .init_array."),
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cl::init(false));
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CGBINDOPT(UseCtors);
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static cl::opt<bool> RelaxELFRelocations(
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"relax-elf-relocations",
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cl::desc(
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"Emit GOTPCRELX/REX_GOTPCRELX instead of GOTPCREL on x86-64 ELF"),
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cl::init(false));
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CGBINDOPT(RelaxELFRelocations);
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static cl::opt<bool> DataSections(
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"data-sections", cl::desc("Emit data into separate sections"),
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cl::init(false));
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CGBINDOPT(DataSections);
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static cl::opt<bool> FunctionSections(
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"function-sections", cl::desc("Emit functions into separate sections"),
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cl::init(false));
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CGBINDOPT(FunctionSections);
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static cl::opt<bool> IgnoreXCOFFVisibility(
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"ignore-xcoff-visibility",
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cl::desc("Not emit the visibility attribute for asm in AIX OS or give "
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"all symbols 'unspecified' visibility in XCOFF object file"),
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cl::init(false));
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CGBINDOPT(IgnoreXCOFFVisibility);
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static cl::opt<bool> XCOFFTracebackTable(
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"xcoff-traceback-table", cl::desc("Emit the XCOFF traceback table"),
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cl::init(true));
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CGBINDOPT(XCOFFTracebackTable);
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static cl::opt<std::string> BBSections(
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"basic-block-sections",
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cl::desc("Emit basic blocks into separate sections"),
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cl::value_desc("all | <function list (file)> | labels | none"),
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cl::init("none"));
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CGBINDOPT(BBSections);
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static cl::opt<std::string> StackProtectorGuard(
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"stack-protector-guard", cl::desc("Stack protector guard mode"),
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cl::init("none"));
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CGBINDOPT(StackProtectorGuard);
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static cl::opt<std::string> StackProtectorGuardReg(
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"stack-protector-guard-reg", cl::desc("Stack protector guard register"),
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cl::init("none"));
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CGBINDOPT(StackProtectorGuardReg);
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static cl::opt<unsigned> StackProtectorGuardOffset(
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"stack-protector-guard-offset", cl::desc("Stack protector guard offset"),
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cl::init((unsigned)-1));
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CGBINDOPT(StackProtectorGuardOffset);
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static cl::opt<unsigned> TLSSize(
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"tls-size", cl::desc("Bit size of immediate TLS offsets"), cl::init(0));
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CGBINDOPT(TLSSize);
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static cl::opt<bool> EmulatedTLS(
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"emulated-tls", cl::desc("Use emulated TLS model"), cl::init(false));
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CGBINDOPT(EmulatedTLS);
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static cl::opt<bool> UniqueSectionNames(
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"unique-section-names", cl::desc("Give unique names to every section"),
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cl::init(true));
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CGBINDOPT(UniqueSectionNames);
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static cl::opt<bool> UniqueBasicBlockSectionNames(
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"unique-basic-block-section-names",
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cl::desc("Give unique names to every basic block section"),
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cl::init(false));
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CGBINDOPT(UniqueBasicBlockSectionNames);
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static cl::opt<EABI> EABIVersion(
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"meabi", cl::desc("Set EABI type (default depends on triple):"),
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cl::init(EABI::Default),
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cl::values(
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clEnumValN(EABI::Default, "default", "Triple default EABI version"),
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clEnumValN(EABI::EABI4, "4", "EABI version 4"),
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clEnumValN(EABI::EABI5, "5", "EABI version 5"),
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clEnumValN(EABI::GNU, "gnu", "EABI GNU")));
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CGBINDOPT(EABIVersion);
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static cl::opt<DebuggerKind> DebuggerTuningOpt(
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"debugger-tune", cl::desc("Tune debug info for a particular debugger"),
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cl::init(DebuggerKind::Default),
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cl::values(
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clEnumValN(DebuggerKind::GDB, "gdb", "gdb"),
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clEnumValN(DebuggerKind::LLDB, "lldb", "lldb"),
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clEnumValN(DebuggerKind::SCE, "sce", "SCE targets (e.g. PS4)")));
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CGBINDOPT(DebuggerTuningOpt);
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static cl::opt<bool> EnableStackSizeSection(
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"stack-size-section",
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cl::desc("Emit a section containing stack size metadata"),
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cl::init(false));
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CGBINDOPT(EnableStackSizeSection);
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static cl::opt<bool> EnableAddrsig(
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"addrsig", cl::desc("Emit an address-significance table"),
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cl::init(false));
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CGBINDOPT(EnableAddrsig);
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static cl::opt<bool> EmitCallSiteInfo(
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"emit-call-site-info",
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cl::desc(
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"Emit call site debug information, if debug information is enabled."),
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cl::init(false));
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CGBINDOPT(EmitCallSiteInfo);
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static cl::opt<bool> EnableDebugEntryValues(
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"debug-entry-values",
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cl::desc("Enable debug info for the debug entry values."),
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cl::init(false));
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CGBINDOPT(EnableDebugEntryValues);
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static cl::opt<bool> PseudoProbeForProfiling(
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"pseudo-probe-for-profiling", cl::desc("Emit pseudo probes for AutoFDO"),
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cl::init(false));
|
|
CGBINDOPT(PseudoProbeForProfiling);
|
|
|
|
static cl::opt<bool> ValueTrackingVariableLocations(
|
|
"experimental-debug-variable-locations",
|
|
cl::desc("Use experimental new value-tracking variable locations"),
|
|
cl::init(false));
|
|
CGBINDOPT(ValueTrackingVariableLocations);
|
|
|
|
static cl::opt<bool> EnableMachineFunctionSplitter(
|
|
"split-machine-functions",
|
|
cl::desc("Split out cold basic blocks from machine functions based on "
|
|
"profile information"),
|
|
cl::init(false));
|
|
CGBINDOPT(EnableMachineFunctionSplitter);
|
|
|
|
static cl::opt<bool> ForceDwarfFrameSection(
|
|
"force-dwarf-frame-section",
|
|
cl::desc("Always emit a debug frame section."), cl::init(false));
|
|
CGBINDOPT(ForceDwarfFrameSection);
|
|
|
|
static cl::opt<bool> XRayOmitFunctionIndex(
|
|
"no-xray-index", cl::desc("Don't emit xray_fn_idx section"),
|
|
cl::init(false));
|
|
CGBINDOPT(XRayOmitFunctionIndex);
|
|
|
|
#undef CGBINDOPT
|
|
|
|
mc::RegisterMCTargetOptionsFlags();
|
|
}
|
|
|
|
llvm::BasicBlockSection
|
|
codegen::getBBSectionsMode(llvm::TargetOptions &Options) {
|
|
if (getBBSections() == "all")
|
|
return BasicBlockSection::All;
|
|
else if (getBBSections() == "labels")
|
|
return BasicBlockSection::Labels;
|
|
else if (getBBSections() == "none")
|
|
return BasicBlockSection::None;
|
|
else {
|
|
ErrorOr<std::unique_ptr<MemoryBuffer>> MBOrErr =
|
|
MemoryBuffer::getFile(getBBSections());
|
|
if (!MBOrErr) {
|
|
errs() << "Error loading basic block sections function list file: "
|
|
<< MBOrErr.getError().message() << "\n";
|
|
} else {
|
|
Options.BBSectionsFuncListBuf = std::move(*MBOrErr);
|
|
}
|
|
return BasicBlockSection::List;
|
|
}
|
|
}
|
|
|
|
llvm::StackProtectorGuards
|
|
codegen::getStackProtectorGuardMode(llvm::TargetOptions &Options) {
|
|
if (getStackProtectorGuard() == "tls")
|
|
return StackProtectorGuards::TLS;
|
|
if (getStackProtectorGuard() == "global")
|
|
return StackProtectorGuards::Global;
|
|
if (getStackProtectorGuard() != "none") {
|
|
ErrorOr<std::unique_ptr<MemoryBuffer>> MBOrErr =
|
|
MemoryBuffer::getFile(getStackProtectorGuard());
|
|
if (!MBOrErr)
|
|
errs() << "error illegal stack protector guard mode: "
|
|
<< MBOrErr.getError().message() << "\n";
|
|
else
|
|
Options.BBSectionsFuncListBuf = std::move(*MBOrErr);
|
|
}
|
|
return StackProtectorGuards::None;
|
|
}
|
|
|
|
// Common utility function tightly tied to the options listed here. Initializes
|
|
// a TargetOptions object with CodeGen flags and returns it.
|
|
TargetOptions
|
|
codegen::InitTargetOptionsFromCodeGenFlags(const Triple &TheTriple) {
|
|
TargetOptions Options;
|
|
Options.AllowFPOpFusion = getFuseFPOps();
|
|
Options.UnsafeFPMath = getEnableUnsafeFPMath();
|
|
Options.NoInfsFPMath = getEnableNoInfsFPMath();
|
|
Options.NoNaNsFPMath = getEnableNoNaNsFPMath();
|
|
Options.NoSignedZerosFPMath = getEnableNoSignedZerosFPMath();
|
|
Options.NoTrappingFPMath = getEnableNoTrappingFPMath();
|
|
|
|
DenormalMode::DenormalModeKind DenormKind = getDenormalFPMath();
|
|
|
|
// FIXME: Should have separate input and output flags
|
|
Options.setFPDenormalMode(DenormalMode(DenormKind, DenormKind));
|
|
|
|
Options.HonorSignDependentRoundingFPMathOption =
|
|
getEnableHonorSignDependentRoundingFPMath();
|
|
if (getFloatABIForCalls() != FloatABI::Default)
|
|
Options.FloatABIType = getFloatABIForCalls();
|
|
Options.EnableAIXExtendedAltivecABI = getEnableAIXExtendedAltivecABI();
|
|
Options.NoZerosInBSS = getDontPlaceZerosInBSS();
|
|
Options.GuaranteedTailCallOpt = getEnableGuaranteedTailCallOpt();
|
|
Options.StackAlignmentOverride = getOverrideStackAlignment();
|
|
Options.StackSymbolOrdering = getStackSymbolOrdering();
|
|
Options.UseInitArray = !getUseCtors();
|
|
Options.RelaxELFRelocations = getRelaxELFRelocations();
|
|
Options.DataSections =
|
|
getExplicitDataSections().getValueOr(TheTriple.hasDefaultDataSections());
|
|
Options.FunctionSections = getFunctionSections();
|
|
Options.IgnoreXCOFFVisibility = getIgnoreXCOFFVisibility();
|
|
Options.XCOFFTracebackTable = getXCOFFTracebackTable();
|
|
Options.BBSections = getBBSectionsMode(Options);
|
|
Options.UniqueSectionNames = getUniqueSectionNames();
|
|
Options.UniqueBasicBlockSectionNames = getUniqueBasicBlockSectionNames();
|
|
Options.StackProtectorGuard = getStackProtectorGuardMode(Options);
|
|
Options.StackProtectorGuardOffset = getStackProtectorGuardOffset();
|
|
Options.StackProtectorGuardReg = getStackProtectorGuardReg();
|
|
Options.TLSSize = getTLSSize();
|
|
Options.EmulatedTLS = getEmulatedTLS();
|
|
Options.ExplicitEmulatedTLS = EmulatedTLSView->getNumOccurrences() > 0;
|
|
Options.ExceptionModel = getExceptionModel();
|
|
Options.EmitStackSizeSection = getEnableStackSizeSection();
|
|
Options.EnableMachineFunctionSplitter = getEnableMachineFunctionSplitter();
|
|
Options.EmitAddrsig = getEnableAddrsig();
|
|
Options.EmitCallSiteInfo = getEmitCallSiteInfo();
|
|
Options.EnableDebugEntryValues = getEnableDebugEntryValues();
|
|
Options.PseudoProbeForProfiling = getPseudoProbeForProfiling();
|
|
Options.ValueTrackingVariableLocations = getValueTrackingVariableLocations();
|
|
Options.ForceDwarfFrameSection = getForceDwarfFrameSection();
|
|
Options.XRayOmitFunctionIndex = getXRayOmitFunctionIndex();
|
|
|
|
Options.MCOptions = mc::InitMCTargetOptionsFromFlags();
|
|
|
|
Options.ThreadModel = getThreadModel();
|
|
Options.EABIVersion = getEABIVersion();
|
|
Options.DebuggerTuning = getDebuggerTuningOpt();
|
|
|
|
return Options;
|
|
}
|
|
|
|
std::string codegen::getCPUStr() {
|
|
// If user asked for the 'native' CPU, autodetect here. If autodection fails,
|
|
// this will set the CPU to an empty string which tells the target to
|
|
// pick a basic default.
|
|
if (getMCPU() == "native")
|
|
return std::string(sys::getHostCPUName());
|
|
|
|
return getMCPU();
|
|
}
|
|
|
|
std::string codegen::getFeaturesStr() {
|
|
SubtargetFeatures Features;
|
|
|
|
// If user asked for the 'native' CPU, we need to autodetect features.
|
|
// This is necessary for x86 where the CPU might not support all the
|
|
// features the autodetected CPU name lists in the target. For example,
|
|
// not all Sandybridge processors support AVX.
|
|
if (getMCPU() == "native") {
|
|
StringMap<bool> HostFeatures;
|
|
if (sys::getHostCPUFeatures(HostFeatures))
|
|
for (auto &F : HostFeatures)
|
|
Features.AddFeature(F.first(), F.second);
|
|
}
|
|
|
|
for (auto const &MAttr : getMAttrs())
|
|
Features.AddFeature(MAttr);
|
|
|
|
return Features.getString();
|
|
}
|
|
|
|
std::vector<std::string> codegen::getFeatureList() {
|
|
SubtargetFeatures Features;
|
|
|
|
// If user asked for the 'native' CPU, we need to autodetect features.
|
|
// This is necessary for x86 where the CPU might not support all the
|
|
// features the autodetected CPU name lists in the target. For example,
|
|
// not all Sandybridge processors support AVX.
|
|
if (getMCPU() == "native") {
|
|
StringMap<bool> HostFeatures;
|
|
if (sys::getHostCPUFeatures(HostFeatures))
|
|
for (auto &F : HostFeatures)
|
|
Features.AddFeature(F.first(), F.second);
|
|
}
|
|
|
|
for (auto const &MAttr : getMAttrs())
|
|
Features.AddFeature(MAttr);
|
|
|
|
return Features.getFeatures();
|
|
}
|
|
|
|
void codegen::renderBoolStringAttr(AttrBuilder &B, StringRef Name, bool Val) {
|
|
B.addAttribute(Name, Val ? "true" : "false");
|
|
}
|
|
|
|
#define HANDLE_BOOL_ATTR(CL, AttrName) \
|
|
do { \
|
|
if (CL->getNumOccurrences() > 0 && !F.hasFnAttribute(AttrName)) \
|
|
renderBoolStringAttr(NewAttrs, AttrName, *CL); \
|
|
} while (0)
|
|
|
|
/// Set function attributes of function \p F based on CPU, Features, and command
|
|
/// line flags.
|
|
void codegen::setFunctionAttributes(StringRef CPU, StringRef Features,
|
|
Function &F) {
|
|
auto &Ctx = F.getContext();
|
|
AttributeList Attrs = F.getAttributes();
|
|
AttrBuilder NewAttrs;
|
|
|
|
if (!CPU.empty() && !F.hasFnAttribute("target-cpu"))
|
|
NewAttrs.addAttribute("target-cpu", CPU);
|
|
if (!Features.empty()) {
|
|
// Append the command line features to any that are already on the function.
|
|
StringRef OldFeatures =
|
|
F.getFnAttribute("target-features").getValueAsString();
|
|
if (OldFeatures.empty())
|
|
NewAttrs.addAttribute("target-features", Features);
|
|
else {
|
|
SmallString<256> Appended(OldFeatures);
|
|
Appended.push_back(',');
|
|
Appended.append(Features);
|
|
NewAttrs.addAttribute("target-features", Appended);
|
|
}
|
|
}
|
|
if (FramePointerUsageView->getNumOccurrences() > 0 &&
|
|
!F.hasFnAttribute("frame-pointer")) {
|
|
if (getFramePointerUsage() == FramePointer::All)
|
|
NewAttrs.addAttribute("frame-pointer", "all");
|
|
else if (getFramePointerUsage() == FramePointer::NonLeaf)
|
|
NewAttrs.addAttribute("frame-pointer", "non-leaf");
|
|
else if (getFramePointerUsage() == FramePointer::None)
|
|
NewAttrs.addAttribute("frame-pointer", "none");
|
|
}
|
|
if (DisableTailCallsView->getNumOccurrences() > 0)
|
|
NewAttrs.addAttribute("disable-tail-calls",
|
|
toStringRef(getDisableTailCalls()));
|
|
if (getStackRealign())
|
|
NewAttrs.addAttribute("stackrealign");
|
|
|
|
HANDLE_BOOL_ATTR(EnableUnsafeFPMathView, "unsafe-fp-math");
|
|
HANDLE_BOOL_ATTR(EnableNoInfsFPMathView, "no-infs-fp-math");
|
|
HANDLE_BOOL_ATTR(EnableNoNaNsFPMathView, "no-nans-fp-math");
|
|
HANDLE_BOOL_ATTR(EnableNoSignedZerosFPMathView, "no-signed-zeros-fp-math");
|
|
|
|
if (DenormalFPMathView->getNumOccurrences() > 0 &&
|
|
!F.hasFnAttribute("denormal-fp-math")) {
|
|
DenormalMode::DenormalModeKind DenormKind = getDenormalFPMath();
|
|
|
|
// FIXME: Command line flag should expose separate input/output modes.
|
|
NewAttrs.addAttribute("denormal-fp-math",
|
|
DenormalMode(DenormKind, DenormKind).str());
|
|
}
|
|
|
|
if (DenormalFP32MathView->getNumOccurrences() > 0 &&
|
|
!F.hasFnAttribute("denormal-fp-math-f32")) {
|
|
// FIXME: Command line flag should expose separate input/output modes.
|
|
DenormalMode::DenormalModeKind DenormKind = getDenormalFP32Math();
|
|
|
|
NewAttrs.addAttribute(
|
|
"denormal-fp-math-f32",
|
|
DenormalMode(DenormKind, DenormKind).str());
|
|
}
|
|
|
|
if (TrapFuncNameView->getNumOccurrences() > 0)
|
|
for (auto &B : F)
|
|
for (auto &I : B)
|
|
if (auto *Call = dyn_cast<CallInst>(&I))
|
|
if (const auto *F = Call->getCalledFunction())
|
|
if (F->getIntrinsicID() == Intrinsic::debugtrap ||
|
|
F->getIntrinsicID() == Intrinsic::trap)
|
|
Call->addAttribute(
|
|
AttributeList::FunctionIndex,
|
|
Attribute::get(Ctx, "trap-func-name", getTrapFuncName()));
|
|
|
|
// Let NewAttrs override Attrs.
|
|
F.setAttributes(
|
|
Attrs.addAttributes(Ctx, AttributeList::FunctionIndex, NewAttrs));
|
|
}
|
|
|
|
/// Set function attributes of functions in Module M based on CPU,
|
|
/// Features, and command line flags.
|
|
void codegen::setFunctionAttributes(StringRef CPU, StringRef Features,
|
|
Module &M) {
|
|
for (Function &F : M)
|
|
setFunctionAttributes(CPU, Features, F);
|
|
}
|